Home / 12,121.02-16,726.92-6,815.82

Finding the Fourth Proportional to 12,121.02, 16,726.92 and 6,815.82

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Solution

The fourth proportional to 12,121.02, 16,726.92 and 6,815.82 is: 9,405.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.02 : 16,726.92 = 6,815.82 : x
  2. Step 2: Convert to fraction form
    12,121.02/16,726.92 = 6,815.82/x
  3. Step 3: Cross multiply
    12,121.02x = 16,726.92 × 6,815.82
  4. Step 4: Simplify right side
    12,121.02x = 114,007,675.87
  5. Step 5: Solve for x
    x = 114,007,675.87/12,121.02
  6. Step 6: Final answer
    x = 9,405.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.